Reversible hydration and dehydration of polyanionic brushes bearing carboxylate, phosphate and sulfonate side groups: a comparative AFM study

2008 ◽  
Vol 10 (47) ◽  
pp. 7180 ◽  
Author(s):  
Zhilu Liu ◽  
Jianxi Liu ◽  
Haiyuan Hu ◽  
Bo Yu ◽  
Miao Chen ◽  
...  
Keyword(s):  
Reversible Hydration ◽  
Hydration And Dehydration

Desolvation induced crystal jumping: reversible hydration and dehydration of a spironolactone–saccharin cocrystal with water as the jumping-mate

CrystEngComm ◽  
2021 ◽  
Vol 23 (39) ◽  
pp. 6838-6842
Author(s):  
Yifu Chen ◽  
Bo Jing ◽  
Zewei Chang ◽  
Junbo Gong
Keyword(s):  
Molecular Conformation ◽  
Lattice Parameter ◽  
Reversible Hydration ◽  
Hydration And Dehydration

We present a spironolactone–saccharin cocrystal hydrate as the first example of a crystal that jumps without changes in either the lattice parameter or the molecular conformation to highlight the unique advantages of the jumping-mate strategy.

scholarly journals Effect of Sulfonamides and Their Structurally Related Derivatives on the Activity of ι-Carbonic Anhydrase from Burkholderia territorii

2021 ◽  
Vol 22 (2) ◽  
pp. 571
Author(s):  
Viviana De Luca ◽  
Andrea Petreni ◽  
Alessio Nocentini ◽  
Andrea Scaloni ◽  
Claudiu T. Supuran ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Antibiotic Resistance ◽  
Pathogenic Bacteria ◽  
Selective Inhibition ◽  
Extensive Study ◽  
Protein Isoforms ◽  
Carbonic Anhydrases ◽  
Physiological Processes ◽  
Microbial Survival ◽  
Reversible Hydration

Carbonic anhydrases (CAs) are essential metalloenzymes in nature, catalyzing the carbon dioxide reversible hydration into bicarbonate and proton. In humans, breathing and many other critical physiological processes depend on this enzymatic activity. The CA superfamily function and inhibition in pathogenic bacteria has recently been the object of significant advances, being demonstrated to affect microbial survival/virulence. Targeting bacterial CAs may thus be a valid alternative to expand the pharmacological arsenal against the emergence of widespread antibiotic resistance. Here, we report an extensive study on the inhibition profile of the recently discovered ι-CA class present in some bacteria, including Burkholderia territorii, namely BteCAι, using substituted benzene-sulfonamides and clinically licensed sulfonamide-, sulfamate- and sulfamide-type drugs. The BteCAι inhibition profile showed: (i) several benzene-sulfonamides with an inhibition constant lower than 100 nM; (ii) a different behavior with respect to other α, β and γ-CAs; (iii) clinically used drugs having a micromolar affinity. This prototype study contributes to the initial recognition of compounds which efficiently and selectively inhibit a bacterial member of the ι-CA class, for which such a selective inhibition with respect to other protein isoforms present in the host is highly desired and may contribute to the development of novel antimicrobials.

The Diffusion of Moisture in Paddy During Hydration and Dehydration Processes

2014 ◽  
Vol 32 (12) ◽  
pp. 1423-1434 ◽  
Author(s):  
Prakash Oli ◽  
Rachelle Ward ◽  
Benu Adhikari ◽  
Peter Torley
Keyword(s):  
Dehydration Processes ◽  
Hydration And Dehydration

Proton Conductivity of Polymer Electrolyte Membranes during Transient Hydration and Dehydration Cycles

2019 ◽  
Vol 41 (1) ◽  
pp. 1381-1392
Author(s):  
William A. Rigdon ◽  
Xinyu Huang ◽  
Daniel S. Hussey ◽  
David L. Jacobson
Keyword(s):  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membranes ◽  
Hydration And Dehydration

scholarly journals Does discontinuous hydration of Senna spectabilis (DC.) H.S. Irwin & Barneby var. excelsa (Schrad.) H.S. Irwin & Barneby (Fabaceae) seeds confer tolerance to water stress during seed germination?

2018 ◽  
Vol 40 (1) ◽  
pp. 36-43 ◽  
Author(s):  
Ayslan Trindade Lima ◽  
Paulo Henrique de Jesus da Cunha ◽  
Bárbara França Dantas ◽  
Marcos Vinicius Meiado
Keyword(s):  
Water Stress ◽  
Seed Germination ◽  
Stress Conditions ◽  
Hydration Time ◽  
Senna Spectabilis ◽  
Mean Germination Time ◽  
Polyethylene Glycol 6000 ◽  
Osmotic Potentials ◽  
Germination Parameters ◽  
Hydration And Dehydration

Abstract: Seed hydration memory is the ability of seeds to retain biochemical and physiological changes caused by discontinuous hydration. This study aimed to determine if Senna spectabilis (DC.) H.S. Irwin & Barneby var. excelsa (Schrad.) H.S.Irwin & Barneby (Fabaceae) present seed memory and evaluate the effects of hydration and dehydration cycles (HD) on the seed germination of this species when submitted to conditions of water stress. Seeds underwent HD cycles (0, 1, 2 and 3 cycles) corresponding to the hydration times X (6 hours), Y (16 hours) and Z (24 hours), determined from the imbibition curve, with 5 hours of dehydration and submitted to water stress conditions. Germination was evaluated at 0.0, -0.1, -0.3, -0.6 and -0.9 MPa, obtained with polyethylene glycol 6000 solution. Germinability (%), mean germination time (days) and hydrotime (MPa d-1) were calculated. The seeds of S. spectabilis var. excelsa are sensitive to the low osmotic potentials tested in this study, however, when submitted to the HD cycles of 16 hours hydration (time Y), the tolerance to water stress conditions is increased. In addition, the observed benefits on the evaluated germination parameters show that S. spectabilis var. excelsa present seed hydation memory.

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